Apparatus for making lapweld-pipes.



W. M, NEGKERMAN. APPARATUS FOR MAKING LAPWELD PIPES. APPLICATION FILEDNOV. 1, 1913.

1,106,577. Patented Aug. 11, 1914.

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INVENTOR 3 7 g /h ISM/M THE NORRIS PETERS; 60., PHOTO-IJTHQ. WASHINGIUN,D. t

W. M. NEGKERMAN.

APPARATUS FOR MAKING LAPWELD PIPES.

APPLICATION FILED NOV. 1, 1913.

l 1 06,577. Patented Aug. 11, 1914.

2 SHEETS-SHEET 2.

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pairs erase a rrr WILLIAM MARTIN NEOKERMAN, OF YOUNGSTOWN, OHIO,ASSIGNOR TO THE YOUNGS- TOWN SHEET TUBE COMPANY, OF YOUNGSTOWN, OHIO, ACORPORATION OF OHIO.

T all whom it may concern:

Be it known that I, WILLIAM M. NECKER- MAN, a citizen of the UnitedStates, residing at Youngstown, in the county of Mahoning and State ofOhio, have invented new and useful Improvements in Apparatus for MakingLapweld-Pipes, of which the following is a specification. I

My invention relates to apparatus for making lap-weld pipes.

One object of my invention is to provide an apparatus whereby the skelpmay be allowed to remain until properly heated 1n the positions inwhichthey are charged into the welding furnace, wherebythe heated. skelp maybe pushed tothe welding rolls without previously moving them laterallyin the furnace, whereby the mandrehbars are pulled by preferablyseparate pullers 1n lme w1th each skelp, whereby the welded pipes maydrop into separate welding troughs 1n llne with the position which theskelphad n the furnace; and whereby the welded pipes may be removed fromthe welding troughs without interfering with the operations of the saidapparatus, and preferably without transferring any of the pipes over thewelding troughs. Preferably, I employ a -welding roll having as manywelding grooves or passes as there are gutters or skelp-heatingpositions in the furnace, but I may employ traveling welding rolls withfewer welding grooves or passes than the number of gutters orskelp-heatingpositions, and I may use a pair of welding rolls with onlya single pass. tion expresses the same in its most limited scope, sincesome portions of the same may be modified without departing from thescope of the appended claims, for .mechanism not definitely limitedtherein may be any mechanism suitable for the purposes provided suchmechanism be the functional and mechanical equivalents of mechanismdisclosed in the specification and drawings. Referring to theaccompanying drawings, Figure l is a plan of that form of my inventionwhich has the number of furnace gutters, welding roll passes, weldingtroughs, and bar pullers equal; Fig. 2,'a section taken transverselythrough the welding troughs; Fig. 3, an enlarged portion of Fig. 2; Fig.4, a view like Fig. l, but with the welding roll provided with aplurality of welding grooves or passes and having Specification ofLetters Patent.

Application filed November 1, 1913.

travel between the furnace in the furnace.

The foregoing outline of my l11VQI1-- APPARATUS FOR MAKINGLAPWELDJPIPES.

Patented Aug. 11, 1914. Serial No. 798,683.

and welding troughs; and Fig. 5, a view like Fig. 4, but

showing a welding roll with only one groove or pass, it being understoodthat the welding rolls shown represent diagrammatically only the upperof a pair of rolls.

On the drawings, 1 represents a welding furnace provided with theparallel gutters 2 for the skelp 3 which have been charged into the samefrom the right in any suitable manner.

4 represents the discharge openings in the furnace, through which theskelp are pushed by any suitable device or mechanism into the passes ofthe welding rolls 5. These rolls extend along in front of the opening 4at right angles to the gutters 2 or skelp 3 I have shown the rolls 5with a separate welding groove or pass 6 in line with the gutters 2 orskelp 3.

7 represents parallel welding troughs which lie directly back of therespective roll passes and in line with the same and the gutters 2 orskelp 3. The troughs lie slightly below the line of travel of the pipesover the mandrel bars 8, of which one is shown over the second troughfrom the observer, 9 representing the mandrel or pipe-ball thereon. Theother mandrel bars are shown in their rearmost position, 10 representingdiagrammatically the pullers for the said bars, the pullers equaling thenumber of bars which in turn preferably equal the number of weldingtroughs.

11 represents the bar puller troughs which equal the number of barpullers.

Fig. 4 difiers from Fig. 1 only in showing the welding roll 5 with onlytwo grooves or passes 6 and the bed 12 for the same mounted on thetracks 13 and movable thereon by the pusher 14, so as to bring thegrooves 6 in line with the skelp 3.

In Fig. 5, the apparatus is as in Fig. 4, except the welding rolls 5have but a single groove or pass 6.

In Figs. 2 and 8, I show the welding troughs on a larger scale in orderthat their structure may he better understood, the other views being ontoo small a scale to show the structure complete. Referring to thesefigures, 15 represents a number of parallel beams supported on thegirders 16, which rest on the posts 17. The troughs proper, marked 7,are each composed of a fiXedside or wall 18 secured to each beam 15 anda pivoted sideo'r wall 19 pivoted to brackets'on the adjacent beam 15.Each pair'of walls'18 and 19 are parallel withthe beams, their upperedges being separated to form the top of a welding troughv 7. From theirupper edges the sides 18 and 19 converge downwardly to a line abovethetop of the chain carrier or conveyer 21' for the pipes.

The carrier 21 is shown composed of endless chains having their upperportions sup ported by the troughs 22, extending trans versely of thetroughs 7. The carriers 21' are provided with outwardly projectingfingers 23. w

To the lower edges of the sides 18 below the sides 19, I hinge theaprons or guide fingers 24, which guide the pipes 25 from the troughs 7to the chain carrier when the pivoted trough-sides 19 are swung awayfrom the fixed trough-sides 18, in the manner shown on Fig. 3, where thetrough-side 19 is swung away from its companion trough-side 18, andpermits the pipe'25 to into the roll passe in line therewith. The

skelp is welded in the usual manner over a pipe ball 9 on the forwardend of a mandrel bar 8. When the welded pipe has been finished, themandrel bar is withdrawn from the pipe-by the corresponding puller 10,the pipe then lying in the corresponding trough 7 The attendant by anysuitable device or mechanism swings the trough-side 19 back as shown onFig. 3, whereupon the pipe rolls down on the fingers 2 1 to the chaincarrier 21, the fingers 23 of which engage the pipe and push it alongbeneath the pivoted guide fingers 2 llying in its path, the said fingersswinging up as shown on Fig. 2 The second skelp to be charged is pushedout of the furnace nextand the operation described is repeated. Theskelp are pushed from the furnace and weldedqin the same order in whichthey are charged 7 into the furnace unless for any reason any particularskelp requires to remain longer 1nthe furnace.

ticable after the heated skelpv are welded, the entire process beingcarried on as orderly and as rapidly as possible.

In the apparatus shown on Fig. 1, the process can be carried on with aminimum number of attendants and at a minimum expendivture of mechanicalenergy and any skelp in thefurnace can be drawn'when ready with- Freshskelp are charged into the furnace as soon as possible, or practhemandrel-bars to be released from a pre viou'sf operat on andbroughtlIlilQ pos t on,

or a welding trough'tobe brought into line n or proper condition, or apipe to be trans-.

out waiting for'the rollsto bepositioned, or

ferred across the welding trough. Every normal intelligent operationforv welding any skelp whenever it. is readytherefor.

In using the apparatus shown on Fig. t,

two pipes can hei -consecutively welded 7 without delay, but the rollscannot be moved' :in line-with another pair -ofskelpfuntil the last ofthe first or preceding pair ofskelp have been welded. Otherwise, theadvan-' tages of the construction shown" on Figs. 1 and 4 are the same.f

The operationof the apparatus'shown on Fig. 5 is the same as thatshownon Fig. 4:

except that none of the skelpin the f'urnace can be welded until theskelp previously pushed out of thefurna'ce'has been welded and thewelding roll hasbeen shifted' in ingpositions, or gutters, is present asin Figs. 1 and 4.")The welding troughs, the

pipe conveyer, and thebarpullers are al ways ready for use whenfwantedwithoutpart of the apparatus is always ready under line with the nextskelp to be welded; However, the advantages of having the welding atro'ughs equal to the number of skelp-heat-' vwaiting for any shiftingofthe same or the welded pipes.

I; claim- 1;"In'a lap-welding apparatus, a furnace?" having fixedpositions in 'which skelp are charged initially and remain untilproperly heated, a. separate welding. trough in line with each of saidpositions, and means for welding each skelp as itis caused to travelfrom its position in'tlie" furnace to "its individualwelding trough. l

2 In alap-welding apparatus, a' furnace having fixed position in whichvk l are charged initially and remain until properly heated, iaseparatewelding trough in line ing each skelp as it is caused to travel from itsos'ition in the furnaceto its individual welding trough, and separatebar-pulling mechanism in" line with each welding trough. i'

3. In a lap-welding'apparatus; a furnace" having fixed positions; inwhich skelp are.

charged initially and remain until properly heated,' a separate weldingtrough inline with each of saidtpositions, and welding rolls locatedbetween thefurna ce and the welding troughs and having a plurality ofweldingpasses; V e 1 1. In a lap-welding apparatus,'a furnace ha vingfixedjpositions' inwhich skelp: are. charged initiallyand remain untilproperly heated, a separate welding trough inlinewith each of saidpositions, welding rolls located between the furnace and the welding iiowith each of said posltlons, means for weld- V heated, a separatewelding trough in line with each of said positions, welding rollslocated between the furnace and welding troughs and having a weldingpass in line with each welding trough, and separate barpulling mechanismin line with each welding trough.

Signed at Youngstown, of October, A. D. 1913.

WILLIAM MARTIN N EGKERMAN Witnesses:

E. T. MGCLEARY, WM. T. LAWTHERS.

Copies of this patent may be obtained for live cents each, by addressingthe "Commissioner of Patents,

Washington, D. G.

0., this 30th day

